Ali, S. M., S. H. Omar, and N. A. Soliman. “Co-Production of Cellulase and Xylanase Enzymes By Thermophilic Bacillus Subtilis 276NS”. International Journal of Biotechnology for Wellness Industries, vol. 2, no. 2, June 2013, pp. 65-74, doi:10.6000/1927-3037.2013.02.02.2.